Had a testing station for many years could only ADVISE on defects. I failed a motor on tyres. Just before the customer came to collect his car we had a visit from the inspectorate he looked thru my paperwork and had me retest the failed motor and came up with the same results .So he waited for the owner to turn up so he could stop him driving his car away He very nearly got a fat lip of the owner when he tried to stop him .Can see this getting out of hand never criticise somebodies car , driving or dog. ?